[PATCH] imx8mm-evk: Generate a single bootable flash.bin again

[Fabio Estevam]

After the conversion to binman in commit 8996e6b7c6a1 ("imx8mm_evk: switch
to use binman to pack images"), it is necessary to flash both flash.bin and
u-boot.itb to get a bootable system. Prior to this commit, only flash.bin
was needed. 

Such new requirement breaks existing distro mechanisms to generate the
final binary because the extra u-boot.itb is now required.

Generate a final flash.bin that can be used again as a single
bootable binary to keep the original behavior.

After this change the SPL binary is called spl.bin, which is a more
descriptive name for its purpose, and can still be used standalone
(for example, for secure boot purposes).

Signed-off-by: Fabio Estevam <feste...@denx.de>
---
 arch/arm/dts/imx8mm-evk-u-boot.dtsi | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi 
b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
index f200afac9f..453fe1d259 100644
--- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
@@ -150,7 +150,7 @@
        };
 
 
-       flash {
+       spl {
                mkimage {
                        args = "-n spl/u-boot-spl.cfgout -T imx8mimage -e 
0x7e1000";
 
@@ -217,4 +217,19 @@
                        };
                };
        };
+
+       imx-boot {
+               filename = "flash.bin";
+               pad-byte = <0x00>;
+
+               spl: blob-ext@1 {
+                       offset = <0x0>;
+                       filename = "spl.bin";
+               };
+
+               uboot: blob-ext@2 {
+                       offset = <0x57c00>;
+                       filename = "u-boot.itb";
+               };
+       };
 };
-- 
2.25.1